Three months after it announced a planned "companywide reorganization," Christie's International has announced that it is combining some departments and some sales, Bloomberg reports.

The auction house has combined its categories of traditional paintings and drawings into a department called Old Masters and 19th-century art, it announced in a statement. As a result, stand-alone sales in Old Master drawings and 19th-century European paintings will no longer be held. Instead, three auctions a year in New York and five in London will combine paintings and works on paper spanning 1300 to 1900.

“It doesn’t make sense,” Charles Beddington, a London-based Old Masters dealer, told Bloomberg. “Does this mean that Pre-Raphaelites are going to be in the same sales as Old Masters? There’s no cross-over of buyers.”

Christie's disagrees. “This strategic change supports the significant levels of cross-over buying between these categories that have been seen at Christie’s over the last decade,” Richard Knight and Nicholas Hall, co-heads of the new department said in the statement. “Over a quarter of the value of Old Master Paintings sales has been purchased by clients who also buy 19th-century paintings.”

A "small number" of staff will be affected by the merger, Matthew Paton, a Christie's press officer said.

The first sale in the new category will take place in London in July and will include a 17th-century painting of St. John the Baptist by Pieter Brueghel the Younger and three pencil portraits by the early 19th- century French artist Jean-Auguste-Dominique Ingres.